JP2005520107A - Rotational feedthrough - Google Patents

Rotational feedthrough Download PDF

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JP2005520107A
JP2005520107A JP2004511737A JP2004511737A JP2005520107A JP 2005520107 A JP2005520107 A JP 2005520107A JP 2004511737 A JP2004511737 A JP 2004511737A JP 2004511737 A JP2004511737 A JP 2004511737A JP 2005520107 A JP2005520107 A JP 2005520107A
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cooling lubricant
seal
housing part
supply
hollow shaft
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JP2005520107A5 (en
JP4028868B2 (en
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ルートヴィヒ ヤコブ
ヨーゼフ グライフ
ヴォルフガング ベクテーラー
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オーテーテー ジェイコブ ゲーエムベーハー ウント コンパニー スパンテクニック カーゲー
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/08—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
    • F16L27/0804—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another
    • F16L27/0808—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation
    • F16L27/0812—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation with slide bearings
    • F16L27/082—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation with slide bearings having axial sealing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/08—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
    • F16L27/0804—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another
    • F16L27/0808—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation
    • F16L27/0824—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation with ball or roller bearings
    • F16L27/0828—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation with ball or roller bearings having radial bearings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/303976—Milling with means to control temperature or lubricate
    • Y10T409/304032—Cutter or work

Abstract

本発明は、回転フィードスルーに関する。この回転フィードスルーは、前ハウジング部（１）において回転可能に支持され、第１のシール面（１３）を有する中空シャフト（４）と、第２のハウジング部（２）において回転可能に取り付けられ、中空シャフト（４）と同軸であり、第１のシール面（１３）と接触する第２のシール面（１４）を有するシールブッシング（１５）とを有する。摩耗を軽減することに加えて、供給される冷却潤滑剤および圧縮空気の漏出による損出を軽減するために、さらに、第２のハウジング部（２）は、供給ライン（４１）と圧縮空気供給ライン（３６）に選択的に装着可能な第１の横方向供給チャネルであって、シールブッシング（１５）の少なくとも１個の半径方向開口部（２４）を介して冷却潤滑剤または圧縮空気を供給する第１の横方向供給チャネル（２７）と、前記のように冷却潤滑剤の供給が行われている間、冷却潤滑剤が送り込まれる第２の供給チャネル（３０）であって、シール面（１３，１４）の接触圧力を増加するために、シールブッシング（１５）の後端を押す圧力ピストン（１８）に冷却潤滑剤を供給する第２の供給チャネル（３０）とを有する。The present invention relates to rotary feedthrough. This rotary feedthrough is rotatably supported in the front housing part (1) and is mounted rotatably in the hollow shaft (4) having the first sealing surface (13) and in the second housing part (2). A seal bushing (15) having a second seal surface (14) that is coaxial with the hollow shaft (4) and in contact with the first seal surface (13). In addition to reducing wear, the second housing part (2) further includes a supply line (41) and a compressed air supply to reduce losses due to leakage of the supplied cooling lubricant and compressed air. A first lateral supply channel selectively attachable to the line (36) for supplying cooling lubricant or compressed air through at least one radial opening (24) of the seal bushing (15) A first lateral supply channel (27) and a second supply channel (30) into which the cooling lubricant is fed while the cooling lubricant is being supplied as described above, the sealing surface ( 13, 14) with a second supply channel (30) for supplying cooling lubricant to the pressure piston (18) pushing the rear end of the seal bushing (15).

Description

本発明は、請求項１の全文部分に係る回転フィードスルーに関する。   The present invention relates to a rotary feedthrough according to the full text part of claim 1.

このようなフィードスルーが機械の回転部分に流体を供給するのに用いられる。特に機械工具の場合、このような回転フィードスルーを用いて機械工具の中空ワーキングスピンドルの中に冷却潤滑剤を供給して工具および／または作業点を冷却または清掃する。標準的な回転フィードスルーの場合、シールされたブッシングまたはシールリングによって回転部分と静止部分との間の接触面を形成し、一方のシール面が他方シール面の上を滑動するようにする。例えば、冷却潤滑剤等の潤滑媒体を供給することについては、二つの滑動面の間のシーリングギャップに潤滑剤を適用して、温度負荷が非常に高くなったり、過度な摩耗やむしれが生じることを防止する。しかし、潤滑性のない媒体を用いなければならない場合もある。つまり、ある種の例では、工具および／または作業ピースを冷却したり、削りカスを除去したりするために、例えば圧縮空気を供給することが必要である。しかし、ここにも問題がある。つまり、滑動面が潤滑されないために、熱の蓄積が増したり、摩耗やむしれが増加することである。   Such feedthroughs are used to supply fluid to the rotating parts of the machine. Particularly in the case of machine tools, such rotary feedthroughs are used to supply cooling lubricant into the hollow working spindle of the machine tool to cool or clean the tool and / or work point. In the case of a standard rotating feedthrough, a sealed bushing or seal ring forms the contact surface between the rotating part and the stationary part so that one sealing surface slides over the other sealing surface. For example, when supplying a lubricating medium such as a cooling lubricant, the lubricant is applied to the sealing gap between the two sliding surfaces, resulting in a very high temperature load and excessive wear and tear. To prevent. However, it may be necessary to use a non-lubricating medium. That is, in certain instances, it may be necessary to supply, for example, compressed air in order to cool the tool and / or work piece or remove shavings. But here is also a problem. That is, since the sliding surface is not lubricated, heat accumulation increases and wear and tear increase.

ＤＥ１９９３２３５５Ａ１によれば、このクラスに係る回転フィードスルーは媒体を交換することが周知である。しかし、この文献では、シール面は潤滑性の媒体を供給した場合にのみ接触する。つまり、非潤滑性の媒体を供給した場合には、摩耗やむしれを防止するために、シール面を互いに離しておかねばならない。この結果、漏れが生じる。この漏れによる損失を最小限にするために、回転可能に取り付けられたスリーブの外壁と中空シャフトの内壁との間にシーリングギャップとして追加的な円筒シールが形成されている。   According to DE 1993 2355 A1, it is known that a rotary feedthrough according to this class replaces the medium. However, in this document, the sealing surface contacts only when a lubricious medium is supplied. That is, when a non-lubricating medium is supplied, the sealing surfaces must be separated from each other in order to prevent wear and tearing. This results in leakage. In order to minimize losses due to this leakage, an additional cylindrical seal is formed as a sealing gap between the outer wall of the rotatably mounted sleeve and the inner wall of the hollow shaft.

別の種類の回転フィードスルーの場合、滑動面の潤滑と冷却の問題を解決するために、外部からの追加的な冷却剤または潤滑剤を有し、一方が他方の上を滑動するシール要素が設けられている。しかし、これは多額の製造費用がかかる。摩擦熱を継続的に放散するために、追加的な冷却剤や潤滑剤を常に供給、排出しなければならないからだ。   In the case of another type of rotary feedthrough, there is a sealing element that has additional external coolant or lubricant, one sliding over the other, to solve the problem of lubrication and cooling of the sliding surface. Is provided. However, this is expensive to manufacture. In order to dissipate frictional heat continuously, additional coolant and lubricant must always be supplied and discharged.

本発明の目的は、導入部で言及した種類の回転フィードスルーを製造することである。このフィードスルーは、より単純な構造を有し、摩耗やむしれが少ないことに加えて、供給する冷却潤滑剤や圧縮空気の漏れによる損失も少ない。   The object of the invention is to produce a rotary feedthrough of the kind mentioned in the introduction. This feedthrough has a simpler structure and less wear and tear, and less loss due to leakage of the supplied cooling lubricant and compressed air.

この目的は、請求項１の特徴を有する回転フィードスルーによって達成される。本発明の好適な構造や効果的な改善は、従属項にて規定する。   This object is achieved by a rotary feedthrough having the features of claim 1. Preferred structures and effective improvements of the invention are defined in the dependent claims.

本発明に係る回転フィードスルーにおいては、冷却潤滑剤または圧縮空気の供給を切り替える場合にも滑動面が接触する。これは、冷却潤滑剤の供給を切替える場合に潤滑面間に隙間ができることを防止する。このような隙間が生じると、未だ供給ライン内にある冷却潤滑剤の漏出につながる可能性がある。したがって、非回転滑動ブッシュに対して中空シャフトの方向に力を加え、その滑動面が常に中空シャフトの滑動面に押しつけられるようにしている。滑動ブッシングに半径方向の導入路によって圧縮空気を供給しても、滑動ブッシングが中空シャフトの滑動面に接触する圧力を大きくするような追加的な軸方向負荷は生じない。冷却潤滑剤の供給によってのみ接触圧力が上昇し、最適なシールが行える。   In the rotary feedthrough according to the present invention, the sliding surface also comes into contact when the supply of cooling lubricant or compressed air is switched. This prevents a gap from being formed between the lubrication surfaces when the cooling lubricant supply is switched. Such a gap may lead to leakage of the cooling lubricant still in the supply line. Therefore, a force is applied to the non-rotating sliding bush in the direction of the hollow shaft so that the sliding surface is always pressed against the sliding surface of the hollow shaft. Supplying the sliding bushing with compressed air through a radial inlet path does not create an additional axial load that increases the pressure with which the sliding bushing contacts the sliding surface of the hollow shaft. The contact pressure increases only by supplying the cooling lubricant, and an optimum seal can be achieved.

本発明の更なる特徴および効果は、図面を参照しながら、以下の実施形態の説明を読むことで明らかになる。   Further features and advantages of the present invention will become apparent from the following description of embodiments with reference to the drawings.

図１に示す回転フィードスルーは、前ハウジング部１と後ハウジング部２とを有するハウジングを含む。後部ハウジング部２は接続部材として構成される。これらの部分はシールリング３によってシールされて相互に接続される。中央通路チャネル５を有する中空シャフト４を、前方および後方回転ベアリング６，７によって中心軸８周りで回転するように前部ハウジング部１に装着する。中空シャフト４の前端部では、シールリング９によってシールされる中央通路チャネル５の中に、例えば機械工具作業スピンドルの中空タイロッドが挿入される。中空シャフト４の後端部では、シャフトに回転可能に取り付けられてこのシャフトと共に回転する第１のシールスリーブ１０が設けられている。これは中空シャフト４の後端部において中央通路チャネル５の拡大部１１に挿入されて、環状シール１２によってシールされている。シールスリーブ１０は、回転しないシールブッシング１５の前端シール面１４に接触する後端シール面１３に特徴がある。シールスリーブ１０およびシールブッシング１５は耐摩擦および耐熱物質からなり、セラミック等が好適である。   The rotary feedthrough shown in FIG. 1 includes a housing having a front housing part 1 and a rear housing part 2. The rear housing part 2 is configured as a connecting member. These parts are sealed by a seal ring 3 and connected to each other. A hollow shaft 4 with a central passage channel 5 is mounted on the front housing part 1 so as to rotate around a central axis 8 by means of front and rear rotational bearings 6, 7. At the front end of the hollow shaft 4, for example, a hollow tie rod of a machine tool working spindle is inserted into a central passage channel 5 which is sealed by a seal ring 9. At the rear end of the hollow shaft 4, a first seal sleeve 10 that is rotatably attached to the shaft and rotates with the shaft is provided. This is inserted into the enlarged part 11 of the central channel 5 at the rear end of the hollow shaft 4 and is sealed by an annular seal 12. The seal sleeve 10 is characterized by a rear end seal surface 13 that contacts a front end seal surface 14 of a seal bushing 15 that does not rotate. The seal sleeve 10 and the seal bushing 15 are made of a friction and heat resistant material, and ceramic or the like is preferable.

シールスリーブ１０と同軸であるシールブッシング１５は後ハウジング部２内で軸方向に動くことができ、シールされた状態でシール１６、１７を介して案内される。シールブッシング１５の後端には圧力ピストン１８があり、これは後ハウジング部２に装着された端部キャップ２０上の圧縮バネ１９によって支持されている。圧力ピストン１８は後ハウジング部２の対応する穴２１内でシール２２によってシールされており、前端ペグ２３がシールブッシング１５の後端に挿入されて、シールしていることに特徴がある。シールブッシング１５には数個の半径方向開口部２４が形成されている。これらの開口部はハウジング部２内の第１の環状空間２５に向かって開口している。半径方向開口部２４は、圧力ピストン１８の前端ペグ２３の前端面２６の前に位置するように設けられる。ハウジング部２内で半径方向に延びる第１の供給チャネル２７は第１の環状空間２５に続いている。   A seal bushing 15, which is coaxial with the seal sleeve 10, can move axially within the rear housing part 2 and is guided through the seals 16, 17 in a sealed state. At the rear end of the seal bushing 15, there is a pressure piston 18, which is supported by a compression spring 19 on an end cap 20 mounted on the rear housing part 2. The pressure piston 18 is sealed by a seal 22 in the corresponding hole 21 of the rear housing part 2, and the front end peg 23 is inserted into the rear end of the seal bushing 15 and sealed. Several radial openings 24 are formed in the seal bushing 15. These openings are opened toward the first annular space 25 in the housing part 2. The radial opening 24 is provided in front of the front end face 26 of the front end peg 23 of the pressure piston 18. A first supply channel 27 extending radially in the housing part 2 continues to the first annular space 25.

圧力ピストン１８の後端面２８と端部キャップ２０との間には第２の環状空間２９があり、第２の半径方向供給チャネル３０がこの環状空間に続いている。これはハウジング部２内で第１の供給チャネル２７の隣に半径方向に配置されている。   There is a second annular space 29 between the rear end face 28 of the pressure piston 18 and the end cap 20, and a second radial supply channel 30 follows this annular space. This is arranged radially in the housing part 2 next to the first supply channel 27.

回転シールスリーブ１０のシール面１３と回転可能に取り付けられたシールブッシング１５のシール面１４との間の領域には回収空間３１が設けられている。この回収空間に接続するように、半径方向排出ライン３３を有する環状空間３２がハウジング部１内に設けられている。この排出ライン３３を用いて、回転シールスリーブ１０と回転可能に取り付けられたシールブッシング１５との間の接触面から流出して回収空間３１に回収された流体を排出する。シールブッシング１５の環状襟部３４とハウジング部２との間に圧縮バネ３５を配置する。このバネによってシールブッシング１５に対して中空シャフト４の方向に力を加えて、シール面１４を有するシールブッシング１５がシールスリーブ１０のシール面１３に常に押し当てられるようにする。   A recovery space 31 is provided in a region between the seal surface 13 of the rotary seal sleeve 10 and the seal surface 14 of the seal bushing 15 that is rotatably attached. An annular space 32 having a radial discharge line 33 is provided in the housing portion 1 so as to be connected to the recovery space. The discharge line 33 is used to discharge the fluid that has flowed out of the contact surface between the rotary seal sleeve 10 and the seal bushing 15 that is rotatably mounted and is collected in the collection space 31. A compression spring 35 is disposed between the annular collar portion 34 of the seal bushing 15 and the housing portion 2. A force is applied to the seal bushing 15 in the direction of the hollow shaft 4 by the spring so that the seal bushing 15 having the seal surface 14 is always pressed against the seal surface 13 of the seal sleeve 10.

図２から分かるように、２本の供給チャネル２７，３０が、この図に概略的に示される供給装置に接続される。この供給装置は、圧縮空気源３７からオン−オフバルブ３８および第１のチェックバルブ３９を通って、第１の供給チャネル２７に接続されたライン４０に続く圧縮空気供給ライン３６を含む。この供給装置は、冷却潤滑剤供給ライン４１も有する。この冷却潤滑剤供給ライン４１は、冷却潤滑剤源４２から第２のオン−オフバルブ４３を通って第２の供給チャネル３０に向かって延び、更に、第２のチェックバルブ４５を有するバイパス４４を通って、第１のチェックバルブ３９の下流のライン４０にも延びる。図２に示す、ハウジングの外にあるこの２個のチェックバルブ３９、４５は後ハウジング部２に一体化することもできる。後ハウジング部２には、シール１６，２２の間に設けられた中間空間に続く半径方向開口部４６も形成されている。圧力を開放するために、シール１６，２２間に回収された漏出流体は、前記開口部４６からライン４７によって回収コンテナ４８に排出される。   As can be seen from FIG. 2, two supply channels 27, 30 are connected to the supply device schematically shown in this figure. The supply device includes a compressed air supply line 36 that extends from a compressed air source 37 through an on-off valve 38 and a first check valve 39 to a line 40 connected to the first supply channel 27. The supply device also has a cooling lubricant supply line 41. The cooling lubricant supply line 41 extends from a cooling lubricant source 42 through a second on-off valve 43 toward the second supply channel 30 and further through a bypass 44 having a second check valve 45. And also extends to a line 40 downstream of the first check valve 39. The two check valves 39, 45, shown in FIG. 2, outside the housing, can also be integrated into the rear housing part 2. The rear housing part 2 is also formed with a radial opening 46 following an intermediate space provided between the seals 16 and 22. In order to relieve the pressure, the leaked fluid recovered between the seals 16 and 22 is discharged from the opening 46 to the recovery container 48 via the line 47.

図２に示す切換位置の場合、オン−オフバルブ３８が閉じられ、第２のオン−オフバルブ４３が作動されている。こうすると、冷却潤滑剤が供給チャネル２７，３０の両方に供給される。冷却潤滑剤を供給チャネル３０に供給することによってシール面１３，１４間の接触圧が増加する。これにより、シールスリーブ１０と非回転シールブッシング１５との間のインターフェイスにライン３６を通って供給された冷却剤の漏出が軽減される。これに対して、圧縮空気が供給されると供給チャネル３０が開放されるので接触圧力が下がり、後端シール面１３，１４に多くの摩耗やむしれが生じることが防止される。   In the switching position shown in FIG. 2, the on-off valve 38 is closed and the second on-off valve 43 is operated. In this way, cooling lubricant is supplied to both supply channels 27, 30. Supplying the cooling lubricant to the supply channel 30 increases the contact pressure between the seal surfaces 13, 14. This reduces leakage of coolant supplied through line 36 to the interface between seal sleeve 10 and non-rotating seal bushing 15. On the other hand, when the compressed air is supplied, the supply channel 30 is opened, so that the contact pressure is reduced, and it is possible to prevent the rear end seal surfaces 13 and 14 from being much worn and peeled.

回転フィードスルーの長手方向の断面図である。It is sectional drawing of the longitudinal direction of a rotation feedthrough. 冷却潤滑剤および空気と接続された回転フィードスルーを示す図である。FIG. 3 shows a rotary feedthrough connected to a cooling lubricant and air.

Claims (12)

冷却潤滑剤と空気を回転機械部分に選択的に供給する回転フィードスルーであって、第１のハウジング部（１）に回転可能に支持され、第１のシール面（１３）を有する中空シャフト（４）と、第２のハウジング部（２）内で回転可能に取り付けられ、前記中空シャフト（４）と同軸であって、前記第１のシール面（１３）と接触する第２のシール面（１４）を有するシールブッシング（１５）と、を有する回転フィードスルーにおいて、
前記第２のハウジング部（２）は、
冷却剤供給ライン（４１）と圧縮空気供給ライン（３６）を選択的に接続可能な第１の横方向供給チャネル（２７）であって、前記シールブッシング（１５）の少なくとも１個の半径方向開口部（２４）を介して冷却潤滑剤または圧縮空気を供給する第１の横方向供給チャネル（２７）と、
前記冷却潤滑剤の供給が行われている間、冷却潤滑剤が送り込まれる第２の供給チャネルであって、前記シール面（１３，１４）の接触圧を増加させるために、前記シールブッシング（１５）の後端を押す圧力ピストン（１８）に前記冷却潤滑剤を供給する第２の供給チャネル（３０）と、
を有することを特徴とする回転フィードスルー。 A rotary feedthrough for selectively supplying cooling lubricant and air to a rotating machine part, the hollow shaft having a first sealing surface (13) rotatably supported by a first housing part (1) 4) and a second seal surface (2) which is rotatably mounted in the second housing part (2), is coaxial with the hollow shaft (4) and contacts the first seal surface (13). In a rotary feedthrough with a seal bushing (15) having
The second housing part (2)
A first lateral supply channel (27) capable of selectively connecting a coolant supply line (41) and a compressed air supply line (36), wherein the seal bushing (15) has at least one radial opening; A first lateral supply channel (27) for supplying cooling lubricant or compressed air via a section (24);
A second supply channel into which cooling lubricant is fed while the cooling lubricant is being supplied, in order to increase the contact pressure of the sealing surfaces (13, 14), the seal bushing (15 ) A second supply channel (30) for supplying the cooling lubricant to the pressure piston (18) pushing the rear end;
A rotary feedthrough characterized by comprising: 前記第２のハウジング部（２）に支持された圧縮バネ（３５）によってシールブッシング（１５）に対して中空シャフト（４）の方向に力を加えて、前記シールブッシング（１５）のＳ−流面（１４）が中空シャフト（４）のシール面（１３）に常に押し当てられるようにすることを特徴とする、請求項１に記載の回転フィードスルー。   A force is applied to the seal bushing (15) in the direction of the hollow shaft (4) by the compression spring (35) supported by the second housing part (2), so that the S-flow of the seal bushing (15). Rotary feedthrough according to claim 1, characterized in that the surface (14) is always pressed against the sealing surface (13) of the hollow shaft (4). 前記第１のシール面（１３）が、前記中空シャフト（４）に挿入されたシールスリーブ（１０）の後端に設けられたことを特徴とする、請求項１または２に記載の回転フィードスルー。   The rotary feedthrough according to claim 1 or 2, characterized in that the first sealing surface (13) is provided at the rear end of a sealing sleeve (10) inserted into the hollow shaft (4). . 前記圧力ピストン（１８）が、前記シールブッシング（１５）の後端に挿入されることを特徴とする、請求項１から３のいずれか１項に記載の回転フィードスルー。   The rotary feedthrough according to any one of claims 1 to 3, characterized in that the pressure piston (18) is inserted into the rear end of the seal bushing (15). 前記圧力ピストン（１８）が、前記シールブッシング（１５）の後端の中にシールされて突出する前端ペグ（２３）を有することを特徴とする、請求項１から４のいずれか１項に記載の回転フィードスルー。   5. The pressure piston (18) according to any one of claims 1 to 4, characterized in that it has a front end peg (23) that protrudes sealed into the rear end of the seal bushing (15). Rotating feedthrough. 前記圧力ピストン（１８）が、前記第２のハウジング部（２）に装着された後端キャップ（２０）に圧縮バネ（１９）によって支持されることを特徴とする、請求項１から５のいずれか１項に記載の回転フィードスルー。   The pressure piston (18) is supported by a compression spring (19) on a rear end cap (20) mounted on the second housing part (2). The rotational feedthrough according to claim 1. 前記第１のハウジング部（１）内において、前記中空シャフト（４）のシール面（１３，１４）とシールブッシング（１５）との間のインターフェイスの領域には回収空間（３１）が設けられ、排出ライン（３３）を有する環状空間（３２）が前記回収空間に接続して設けられていることを特徴とする、請求項１から６のいずれか１項に記載の回転フィードスルー。   In the first housing part (1), a recovery space (31) is provided in the region of the interface between the seal surface (13, 14) of the hollow shaft (4) and the seal bushing (15), The rotary feedthrough according to any one of claims 1 to 6, characterized in that an annular space (32) having a discharge line (33) is provided in connection with the recovery space. 前記２本の供給チャネル（２７，３０）は供給装置（３６，３７，４１，４２）に接続し、圧縮空気および冷却潤滑剤を供給することを特徴とする、請求項１から７のいずれか１項に記載の回転フィードスルー。   8. The two supply channels (27, 30) are connected to a supply device (36, 37, 41, 42) and supply compressed air and cooling lubricant. Rotational feedthrough according to item 1. 前記供給装置（３６，３７，４１，４２）は、圧縮空気源（３７）から第１のオン−オフバルブ（３８）と第１のチェックバルブ（３９）とを介して、第１の供給チャネル（２７）に接続されたライン（４０）に続く圧縮空気供給ライン（３６）を有することを特徴とする、請求項８に記載の回転フィードスルー。   The supply device (36, 37, 41, 42) is connected to a first supply channel (37) from a compressed air source (37) through a first on-off valve (38) and a first check valve (39). Rotational feedthrough according to claim 8, characterized in that it has a compressed air supply line (36) following a line (40) connected to 27). 前記供給装置（３６，３７，４１，４２）は、冷却潤滑剤源（４２）から第２のオン−オフバルブ（４３）を介して第２の供給チャネル（３０）に続き、第２のチェックバルブ（４５）を有するバイパス（４４）を越えて前記第１のチェックバルブ（３９）の下流の前記ライン（４０）に続く冷却潤滑剤供給ライン（４１）を有することを特徴とする、請求項９に記載の回転フィードスルー。   The supply device (36, 37, 41, 42) continues from the cooling lubricant source (42) to the second supply channel (30) via the second on-off valve (43), and the second check valve. 10. A cooling lubricant supply line (41) following the line (40) downstream of the first check valve (39) beyond a bypass (44) having (45). Rotating feedthrough as described in 前記第１のチェックバルブ（３９）が前記第２のハウジング部（２）に一体化されていることを特徴とする、請求項９に記載の回転フィードスルー。   10. The rotary feedthrough according to claim 9, characterized in that the first check valve (39) is integrated in the second housing part (2). 前記第２のチェックバルブ（４５）が前記第２のハウジング部（２）に一体化されていることを特徴とする、請求項１０または１１に記載の回転フィードスルー。   A rotary feedthrough according to claim 10 or 11, characterized in that the second check valve (45) is integrated in the second housing part (2).
JP2004511737A 2002-06-07 2003-06-04 Rotational feedthrough Expired - Fee Related JP4028868B2 (en)

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